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  <title>由文件或 URL 创建一个新图象。</title>
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 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.imagecreatefromwebp" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">imagecreatefromwebp</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.4.0, PHP 7)</p><p class="refpurpose"><span class="refname">imagecreatefromwebp</span> &mdash; <span class="dc-title">由文件或 URL 创建一个新图象。</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.imagecreatefromwebp-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>imagecreatefromwebp</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
   ) : <span class="type">resource</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>imagecreatefromwebp()</strong></span> 
   返回从给定文件名创建的图像标示符。
  </p>
  <div class="tip"><strong class="tip">Tip</strong><p class="simpara">如已启用<a href="filesystem.configuration.html#ini.allow_url_fopen" class="link">fopen 包装器</a>，在此函数中， URL 可作为文件名。关于如何指定文件名详见 <span class="function"><a href="fopen.html" class="function">fopen()</a></span>。各种
wapper 的不同功能请参见 <a href="wrappers.html" class="xref">支持的协议和封装协议</a>，注意其用法及其可提供的预定义变量。</p></div>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.imagecreatefromwebp-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">filename</code></dt>

     <dd>

      <p class="para">
        WebP 图像文件路径。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.imagecreatefromwebp-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">成功后返回图象资源,失败后返回 <strong><code>FALSE</code></strong> 。</p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.imagecreatefromwebp-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3686">
    <p><strong>Example #1 Convert an WebP image to a jpeg image using <span class="function"><strong>imagecreatefromwebp()</strong></span></strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">//&nbsp;加载&nbsp;WebP&nbsp;文件<br /></span><span style="color: #0000BB">$im&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">imagecreatefromwebp</span><span style="color: #007700">(</span><span style="color: #DD0000">'./example.webp'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;以&nbsp;100%&nbsp;的质量转换成&nbsp;jpeg&nbsp;格式<br /></span><span style="color: #0000BB">imagejpeg</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'./example.jpeg'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
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